Spring-tire.



H. W. HOOTON & S. A. DUGGINS.

SPRING TIRE.

APPLlcATloN FILED, IAN. 12. 1.91.4.

1,146,708. Patentedmy 13, 1915..

Y UNITED STATES PATENT OFFICE.' f f y* HENRY W. Hooroiv Annsrnrnniv 1A. :DUGGINsgoF SALT LAKE crrY, UTAH.

Application filed Januaryiz, 1914. `smal No. 811,736.

i hereby ,declare the following-,to be a1 ful-l,

clear, and exact description of the invention, such as will enable othersslilledxin:the 1art to which it appertains tolmale and use the same. e. e i

Our'invention relates to improvements in spring tire construction and residesprincipally in the provisionof' a, spring tire whichis constructedso as to. present all of the resiliency and advantages of a pneumatie tire in combination with the durability of a solid tire. .1 1

Another object is to provide a springtire `which comprises 1a casing anda plurality of springs arranged so as to yield within the casing and to provide an effective and 1 `durablespring tire. 25

Another object `is to improve spring tires so as to render them more practical, reliable and efcient in operation and inexpensive to manufacture.

The above and additional objects are accomplished by such means as are illustrated in the accompanyingdrawings, described in the following specification, and then more particularly pointed out in the claims which are appended hereto and form a part of this application.

With reference to the drawings, wherein we have illustrated the preferred embodiment of our invention as it is .reduced to practice, and throughout the several views of which similar reference numerals designate `corresponding parts: Figure 1 is a fragmentary vertical sectional view takenl through our improved tire, Fig. 2 is a fragmentary side elevation of a wheel, 'showing a portion of our improved tire thereon, and Fig. 3 1s a detail perspective view .of the cushioning means within the casing of the s rinotire. b

Referring to the `drawings by characters of reference, 1 designates kas an entirety the axle of a vehicle to `which `a hub` 2 is attached. The hub 2 comprises comple- 1 mentary hub plates 3 and 1 which are provided with sockets 10 to receive the enlarged inner ends 12 of the spokes 11. The

i 1 outer ends of the spokes 11 are threaded and Specicationof Iictters Patenti 22 to hold them' securelyin place.

atented July 13, 1915.

turned within openingsyin ztheinner face of `a rim 18.

channel shaped ring 2O mounted upon the rlhe sides ofthe rim are 1 grooved 1circumferentially, as at 19. 1 `A outer edge.` ofthe rim 18 is for` a purpose to be later more fully described.

`Aiiexilole tire casing 21 ofthe ordinary structure preferably issecured tothe rim `18 by means of bolts 22 that are inserted transversely through the sides ofthe casing and the "rim 18. fNuts areturned upon the bolts The edges of fthe casing 21 are enlarged and rounded, as at 23, and said rounded portions 23 yengage within the grooves 19 in the sides of the rim. Cylindrical clampingrings 24 and 25 are mounted upon opposite sidesv of the casing..v The1bolts`22. extend through f andhold the rings 21 and 25 in clamping position and by means of the cylindrical clamping rings and grooved faces of the e rim the casing is securely held upon the rim and is prevented from being pinched or otherwise injured. i

A flat serpentine spring 26 is mounted within the casing and engages in the channel shaped ring 2O at spaced points. A tubular flexible preferably resilient pipe 27 is interposed between the inner face ofthe casing and outer face of the spring 26 and is secured to the spring 26 at spaced points thereon. A plurality of coil springs 28 are mountedupon the tubular cushioning member 27 at points where the tubular cushioning member is secured to the spring 2,6. Spring` arms 29 and 30 extend outwardly from the springs 28 on the upper side thereof in opposite directions and engage the inner facev of the casing l21. These arms hold thefcasing in extended position and yield when the casing is brought to bear upon the ground. U-shaped holdingvmembers 31 are secured at their` web portions to the inner faces of the springs 28 and have their depending side portion 32 engaging the sides of the spring 26. These holding members secure the springs 28 and member 27 to the spring 26.

It will be readilyseen with reference to the foregoing description and accompanying `drawings that we have provided a spring tirein which the serpentine spring,

` tubular member'274 and springs 28 provide an effective cushioning action. The arms 291 and 30` on the springs 28 hold the tread of `the casing y21 extendedfand give it an inated appearance as Well as assist the springs 2,8 and 26in their resilient action.N The tubular fiexible member '27 provides means for supporting the springs 2,8uanc1r v acts as cushioning means as Well.

In practice, Wev have found that the fo'rinl of our invention,` illustrated inthe 'drawings and referred to in the above description,

as the preferred embodiment, is the mosty efficientv and practical; yet realizing that the f conditions concurrent with thev adoption of tubular cushioning lmember interposed bei tween the spring Vand casing, coil springs carried by the cushioning member, means to s691119, tllQiCQil. qnfrlgs.v t0 the Spring, and springarms kcarried by eachcoil spring, eX- .'teiiding from; opposite sides thereof andl rim and disposed Within the casing, a resilient tube interposed between the spring land casing and connected Vwith the spring at spaced points"thereon, a plurality of coil springs surrounding: the tubular cushioning member, meanscarried bythe coilil springs to secure them to the serpentine spring, and means carried by each coil spring to hold the tirevcasing in extended position.

1 .Iin testimony Whereofwe affix our signatures in presence vof tWo Witnesses.A

HENRY W. HOOTON. c STEPHEN A DUGGINS Witnesses: H. GREGORY,

@H nisfros PETRULER.

Copies of this patent'maybe. obtained. for ve cents each, fby addressing the .oinmissviioner ofy Patents. i i Washington, D. Q. 

